Latest dyno from the Green Bay Crew: Todd's car
#16
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#17
Burning Brakes
Join Date: May 2006
Location: Portland, Oregon
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#18
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#19
Burning Brakes
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#20
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I'm not sure if this block has those rings installed.
The steel cylinder motors are larger displacement.
This is what the rings look like Porken brought up (not sure if they are on this motor):
http://members.rennlist.com/pageauto/block.htm
This is the steel cylinder motor you are talking about:
https://rennlist.com/forums/928-forum/239222-110mm-bore-928-engine-project-plans-for-a-7-4-liter-in-the-works.html
#21
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S4 crank + stock lenght 150mm 928/944/951 rods + 951 pistons = about 2mm below deck level on TDC.
Just today I was picking GTS heads from machine shop and machinist mentioned its better to have piston come little above deck than just deck level. According to his tests in Ford 5.0L engines this alone can mean 20 hp more. So having same engine size, compression ratio, basic head design, valves, cams etc. but higher TDC piston position means more hp.
Just today I was picking GTS heads from machine shop and machinist mentioned its better to have piston come little above deck than just deck level. According to his tests in Ford 5.0L engines this alone can mean 20 hp more. So having same engine size, compression ratio, basic head design, valves, cams etc. but higher TDC piston position means more hp.
#22
Tim's dyno was 556 SAE, but that was well over three years ago already. I can guarantee you that number isn't of much value anymore.
The 100% stock A/T has never had a problem the whole time he's had the car. That's even with him having drag radials on there.
Also, if we run this car as is on the local dynojet (actually about 40 miles away, this one is down the street) the numbers will be higher. The only apples to apples conparison is to Louie's posted dyno sheets since they are both on the same type of dyno with the same calculations.
#24
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#25
As far as I know-
This engine:
5.0 liter, stock crank, stock rods, 951 pistons, stock heads, Porsche cams, stock intake, stock exhaust manifolds. Horsepower so far as shown above.
The other engine that some have asked about:
7 liters, custom stroker crank, custom rods, custom pistons, custom wet sleeve hardened steel cylinders, ported, polished and flow bench tested big valve heads, custom cams, modified intake, big tube headers, probably more. Horsepower expected to be more than shown above.
This engine:
5.0 liter, stock crank, stock rods, 951 pistons, stock heads, Porsche cams, stock intake, stock exhaust manifolds. Horsepower so far as shown above.
The other engine that some have asked about:
7 liters, custom stroker crank, custom rods, custom pistons, custom wet sleeve hardened steel cylinders, ported, polished and flow bench tested big valve heads, custom cams, modified intake, big tube headers, probably more. Horsepower expected to be more than shown above.
#26
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wow, confusing
so, with a normal stroker, ive heard 968 pistons, stock 928 rods and then the devek or scat crank with the 928 journals. are those 968 pistons different with the offset than 951s? they must be right. 951 pistons more like 928 4.7 or 5 liter pistons?
thanks,
Mk
so, with a normal stroker, ive heard 968 pistons, stock 928 rods and then the devek or scat crank with the 928 journals. are those 968 pistons different with the offset than 951s? they must be right. 951 pistons more like 928 4.7 or 5 liter pistons?
thanks,
Mk
S4 crank + stock lenght 150mm 928/944/951 rods + 951 pistons = about 2mm below deck level on TDC.
Just today I was picking GTS heads from machine shop and machinist mentioned its better to have piston come little above deck than just deck level. According to his tests in Ford 5.0L engines this alone can mean 20 hp more. So having same engine size, compression ratio, basic head design, valves, cams etc. but higher TDC piston position means more hp.
Just today I was picking GTS heads from machine shop and machinist mentioned its better to have piston come little above deck than just deck level. According to his tests in Ford 5.0L engines this alone can mean 20 hp more. So having same engine size, compression ratio, basic head design, valves, cams etc. but higher TDC piston position means more hp.
#27
I can't wait until I get my stuff together.
Can you PM me his number again hacker? Remember, I mentioned I switched phones and lost his and your number. Tim's Too. Thanks.
Can you PM me his number again hacker? Remember, I mentioned I switched phones and lost his and your number. Tim's Too. Thanks.
#28
Race Director
Okay.....i guess reading the previous posts HELPS......duh
I thought this was the jewelry looking sleeve motor.....
Those mini sleeves sure look interesting...to squeeze the top of the cylinder..vs a complete liner....
So heres another ????
Why didn't he "O" ring the motor like the booster 951's.....that seems to help in high boost scenarios??
I thought this was the jewelry looking sleeve motor.....
Those mini sleeves sure look interesting...to squeeze the top of the cylinder..vs a complete liner....
So heres another ????
Why didn't he "O" ring the motor like the booster 951's.....that seems to help in high boost scenarios??
#29
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He's running a Cometic triple layer metal gasket (I can sense the huge smile on Brendan's face as he reads this)